Rahul Joshi This workflow corresponds to n8n.io template #8948 — we link there as the canonical source.
This workflow follows the Google Calendar → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "IgdFJTPyiQgcyuZ0",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Invoice Reminders Calendar",
"tags": [],
"nodes": [
{
"id": "12db8aa7-301c-48e9-b2b8-c4d6c4952a97",
"name": "Workflow Description",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2400,
-96
],
"parameters": {
"width": 389,
"height": 592,
"content": "## \ud83d\udccb Stripe Invoice to Google Calendar Automation\n\nThis workflow automatically monitors Stripe invoices and creates Google Calendar reminders for invoices due within the next 7 days.\n\n### Key Features:\n- Daily scheduled execution at 8 AM\n- Fetches draft invoices from Stripe\n- Filters invoices due within 7 days\n- Creates calendar events only for new invoices\n- Prevents duplicate calendar entries\n\n### Prerequisites:\n- Stripe API credentials configured\n- Google Calendar OAuth2 credentials\n- Access to target Google Calendar\n\n### Use Case:\nPerfect for freelancers, agencies, or businesses that need automated invoice due date tracking and reminders."
},
"typeVersion": 1
},
{
"id": "c4e5fef2-e9a0-407e-9c33-a7d30025daba",
"name": "Schedule Setup",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1872,
-288
],
"parameters": {
"width": 300,
"height": 320,
"content": "## \u23f0 Daily Schedule Setup\n\nConfigured to run every day at 8:00 AM using cron expression `0 8 * * *`\n\n**Setup Instructions:**\n1. Adjust the cron expression if needed\n2. Consider your timezone settings\n3. Test with a shorter interval during setup\n\n**Cron Format:** `minute hour day month dayofweek`"
},
"typeVersion": 1
},
{
"id": "58ec67ec-fb91-4c04-9cb9-da017afe3065",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-1664,
64
],
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "0 8 * * *"
}
]
}
},
"typeVersion": 1.1
},
{
"id": "8bfcbc60-3af3-4204-b631-d3adce6f7c3f",
"name": "Stripe Setup Guide",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2288,
-592
],
"parameters": {
"width": 300,
"height": 424,
"content": "## \ud83d\udcb3 Stripe API Configuration\n\n**Setup Steps:**\n1. Go to n8n Credentials\n2. Add new Stripe API credential\n3. Enter your Stripe Secret Key\n4. Test the connection\n\n**Query Parameters:**\n- `status=draft`: Only fetch draft invoices\n- `limit=100`: Maximum 100 invoices per request\n"
},
"typeVersion": 1
},
{
"id": "72b75afe-0fef-46a3-b999-da3ccf3b1691",
"name": "Get Stripe Invoices",
"type": "n8n-nodes-base.httpRequest",
"position": [
-1472,
64
],
"parameters": {
"url": "https://api.stripe.com/v1/invoices",
"options": {},
"sendQuery": true,
"sendHeaders": true,
"authentication": "predefinedCredentialType",
"queryParameters": {
"parameters": [
{
"name": "status",
"value": "draft"
},
{
"name": "limit",
"value": "100"
}
]
},
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/x-www-form-urlencoded"
}
]
},
"nodeCredentialType": "stripeApi"
},
"credentials": {
"stripeApi": {
"name": "<your credential>"
}
},
"typeVersion": 4.1
},
{
"id": "f6695758-d333-446e-8379-81096965ad30",
"name": "Array Processing",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1536,
224
],
"parameters": {
"width": 280,
"height": 376,
"content": "## \ud83d\udccb Processing Invoice Array\n\nThe Stripe API returns invoices in a `data` array. This node splits the array so we can process each invoice individually.\n\n**What it does:**\n- Takes the `data` field from Stripe response\n- Creates separate items for each invoice\n- Enables individual processing downstream"
},
"typeVersion": 1
},
{
"id": "a6aade30-8cbf-44dc-96b4-ead84be48371",
"name": "Split Invoices",
"type": "n8n-nodes-base.itemLists",
"position": [
-1248,
64
],
"parameters": {
"options": {},
"fieldToSplitOut": "data"
},
"typeVersion": 3
},
{
"id": "0c63a347-c22e-45d3-a85d-8ce9c00a2569",
"name": "Date Filter Logic",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1184,
-384
],
"parameters": {
"width": 280,
"height": 416,
"content": "## \ud83d\udd0d Invoice Due Date Filter\n\nFilters invoices based on due date criteria:\n\n**Conditions (ALL must be true):**\n1. Invoice has a due date\n2. Due within next 7 days\n3. Due date is today or later\n\n**Logic:**\n- Converts dates to Unix timestamps\n- Uses JavaScript expressions for calculations\n- Only passes invoices meeting all criteria"
},
"typeVersion": 1
},
{
"id": "007ad07d-634c-4cc1-b8e0-ad6f1c77a6ca",
"name": "Filter Due Invoices",
"type": "n8n-nodes-base.if",
"position": [
-1040,
64
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 1,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "has-due-date",
"operator": {
"type": "number",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.due_date }}",
"rightValue": ""
},
{
"id": "due-within-7-days",
"operator": {
"type": "number",
"operation": "lte"
},
"leftValue": "={{ $json.due_date }}",
"rightValue": "={{ Math.floor((Date.now() + (7 * 24 * 60 * 60 * 1000)) / 1000) }}"
},
{
"id": "due-after-today",
"operator": {
"type": "number",
"operation": "gte"
},
"leftValue": "={{ $json.due_date }}",
"rightValue": "={{ Math.floor(Date.now() / 1000) }}"
}
]
}
},
"typeVersion": 2
},
{
"id": "3309ccc7-bdd4-4582-a584-6f702ca74f9f",
"name": "Calendar API Setup",
"type": "n8n-nodes-base.stickyNote",
"position": [
-880,
256
],
"parameters": {
"width": 300,
"height": 352,
"content": "## \ud83d\udcc5 Google Calendar Setup\n\n**Configuration Steps:**\n1. Create Google Calendar OAuth2 credentials\n2. Select your target calendar\n3. Set time range (next 30 days)\n\n**Purpose:**\nFetches existing calendar events to check for duplicate invoice reminders.\n\n\u26a0\ufe0f **Note:** Replace the calendar ID with your actual calendar email"
},
"typeVersion": 1
},
{
"id": "07d2cba4-0897-4735-8c1d-5a9c9cb11006",
"name": "Google Calendar Get Events",
"type": "n8n-nodes-base.googleCalendar",
"position": [
-832,
64
],
"parameters": {
"end": "={{ Math.floor((Date.now() + (30 * 24 * 60 * 60 * 1000)) / 1000) }}",
"start": "={{ Math.floor(Date.now() / 1000) }}",
"calendar": {
"__rl": true,
"mode": "list",
"value": "user@example.com",
"cachedResultName": "user@example.com"
},
"additionalFields": {}
},
"credentials": {
"googleCalendarOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "30f03054-10a8-4683-9db8-158e1959f139",
"name": "Duplicate Prevention",
"type": "n8n-nodes-base.stickyNote",
"position": [
-736,
-368
],
"parameters": {
"width": 280,
"height": 384,
"content": "## \ud83d\udd04 Duplicate Detection\n\n**Logic:**\n1. Extracts invoice IDs from existing calendar events\n2. Looks for pattern `invoice_id:XXXXXX` in event descriptions\n3. Compares current invoice ID with existing ones\n\n**Fields Created:**\n- `existing_invoice_ids`: Array of found invoice IDs\n- `current_invoice_id`: Current invoice being processed"
},
"typeVersion": 1
},
{
"id": "8b12c8ec-4252-4490-9a49-cba0c75f5b0d",
"name": "Check Invoice Exists",
"type": "n8n-nodes-base.set",
"position": [
-624,
64
],
"parameters": {
"fields": {
"values": [
{
"name": "existing_invoice_ids",
"stringValue": "={{ $input.all().map(event => {\n const description = event.json.description || '';\n const match = description.match(/invoice_id:([^\\s\\n]+)/);\n return match ? match[1] : null;\n}).filter(id => id !== null) }}"
},
{
"name": "current_invoice_id",
"stringValue": "={{ $('Filter Due Invoices').item.json.id }}"
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "c70a542d-d544-469e-8fd3-d29324727a45",
"name": "New Invoice Check",
"type": "n8n-nodes-base.stickyNote",
"position": [
-432,
224
],
"parameters": {
"width": 280,
"height": 312,
"content": "## \u2705 New Invoice Validation\n\n**Conditions (OR logic):**\n1. Invoice ID not found in existing events\n2. Current invoice ID exists and is valid\n\n**Result:**\nOnly new invoices (not already in calendar) will proceed to create calendar events."
},
"typeVersion": 1
},
{
"id": "a9703708-0584-4daf-90b3-e23b5b27410a",
"name": "IF Not Exists",
"type": "n8n-nodes-base.if",
"position": [
-416,
64
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 1,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "or",
"conditions": [
{
"id": "invoice-not-exists",
"operator": {
"type": "boolean",
"operation": "equal"
},
"leftValue": "={{ !$json.existing_invoice_ids.includes($json.current_invoice_id) }}",
"rightValue": true
},
{
"id": "8a1ef7b4-b24f-47ed-a9c6-bc5c0bd379c5",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.current_invoice_id }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2
},
{
"id": "f7570c80-326a-4248-85ff-6730f80a1168",
"name": "Calendar Event Setup",
"type": "n8n-nodes-base.stickyNote",
"position": [
-256,
-352
],
"parameters": {
"width": 300,
"height": 384,
"content": "## \ud83d\udcc5 Create Calendar Reminder\n\n**Event Details:**\n- **Title:** \"Pending Invoice\"\n- **Start Time:** Invoice due date\n- **Duration:** 1 hour\n- **Description:** Includes invoice ID for tracking\n\n**Customization Ideas:**\n- Add customer name to title\n- Include invoice amount\n- Set custom reminder times\n- Add invoice URL to description"
},
"typeVersion": 1
},
{
"id": "f57610fa-52d1-48f5-9a21-ac533ffcb1ac",
"name": "Google Calendar Create Event",
"type": "n8n-nodes-base.googleCalendar",
"position": [
-208,
64
],
"parameters": {
"end": "={{ new Date(($('Filter Due Invoices').item.json.due_date * 1000) + (60 * 60 * 1000)).toISOString() }}",
"start": "={{ new Date($('Filter Due Invoices').item.json.due_date * 1000).toISOString() }}",
"calendar": {
"__rl": true,
"mode": "list",
"value": "user@example.com",
"cachedResultName": "user@example.com"
},
"additionalFields": {
"summary": "Pending Invoice Due",
"attendees": []
}
},
"credentials": {
"googleCalendarOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "04d55a9b-fe45-4185-978c-18144d689b01",
"connections": {
"IF Not Exists": {
"main": [
[
{
"node": "Google Calendar Create Event",
"type": "main",
"index": 0
}
]
]
},
"Split Invoices": {
"main": [
[
{
"node": "Filter Due Invoices",
"type": "main",
"index": 0
}
]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Get Stripe Invoices",
"type": "main",
"index": 0
}
]
]
},
"Filter Due Invoices": {
"main": [
[
{
"node": "Google Calendar Get Events",
"type": "main",
"index": 0
}
]
]
},
"Get Stripe Invoices": {
"main": [
[
{
"node": "Split Invoices",
"type": "main",
"index": 0
}
]
]
},
"Check Invoice Exists": {
"main": [
[
{
"node": "IF Not Exists",
"type": "main",
"index": 0
}
]
]
},
"Google Calendar Get Events": {
"main": [
[
{
"node": "Check Invoice Exists",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
googleCalendarOAuth2ApistripeApi
Pro
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About this workflow
Automatically track Stripe invoices and create Google Calendar reminders for upcoming due dates. This workflow ensures you never miss a payment deadline by running daily checks, filtering invoices due within the next 7 days, and adding them to your calendar with invoice details.…
Source: https://n8n.io/workflows/8948/ — original creator credit. Request a take-down →
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